INDEX 



389 



Glacial epoch, 328-364; fact of, 328- 

 329; ice extent and centers, 329- 

 331; movement and depth of ice, 

 331-333; successive ice invasions, 

 333-334; driftless areas, 334; ice 

 erosion, 334-337; ice deposits, 

 337-341; loess, 341; Great Lakes 

 history, 342-349; other existing 

 lakes, 348, 350; extinct lakes, 351- 

 352; drainage changes, 352-356; 

 advantages and disadvantages, 

 357-358; duration, 358; time 

 since, 359-360; cause of, 360-364; 

 in Europe, 368. 



Glacier National Park, 33. 



Glyptodonts, 369, 371. 



Glyptocrinus, 93. 



Gold deposits, in Jurassic, 225-226; 

 in Tertiary, 310-311. 



Goldfuss, A., 229. 



Goniatites, 99, 135-136, 156-157, 

 175. 



Grabau, A. W., 34. 



Grammy sia, 135. 



Grand Canyon of Arizona, 51-52, 

 147, 301. 



Granger, W., 288. 



Granite, Archean, 46. 



Graphite, 46, 54. 



Graptolites, 13, 15, 72-73, 91-92, 

 114, 133, 155. 



Grasses, 313. 



Grasshoppers, 13, 21, 232. 



Great Basin, 82, 104, 107, 181, 183, 

 289, 301. 



Great Lakes, 106; history of, 342- 

 349. 



Great Salt Lake, 366. 



Greenbrier formation, 143, 147. 



Greenland, 255, 313, 329. 



Green Mountains, 86, 87, 250, 332. 



Green River formation, 282, 287. 



Greensands, 256. 



Grenville series, 42-43. 



Ground-sloths, 370. 



Group, 31, 32. 



Gryphea, 230. 



Guelph formation, 103-106. 



Guettard, J., 113. 



Guth, F. B., 81. 



Gymnosperms, 11, 12, 133, 154, 170, 

 172, 190, 212-213, 256. 



Gypsum quarries, Silurian, 113; Per- 

 mian, 190; Triassic, 212. 



Haime and Edwards, 113. 



Hall, J., 92, 96, 97, 114, 115, 136, 

 137, 155. 



Halysites, 113. 



Hamilton formation, 120, 122-124, 

 133. 



Haug, E., 33. 



Helderbergian series, 121-122; time, 

 125-126. 



Helioceras, 260. 



Heliolites, 113. 



Hemiaster, 230. 



Hesperornis, 262. 



Hexacoralla, 93, 191, 213, 226. 



Highlands of the Hudson, 87, 298. 



Hill, R. T., 229, 230, 242, 259. 



Himalaya Mountains, 188, 210, 225, 

 255, 306, 308, 309. 



Hitchcock, E., 217. 



Holland, 305. 



Holothuroids, 13, 17, 18, 73, 93. 



Holyoke Range, 208, 209, 277. 



Homalonotus, 137. 



Homo heidelbergensis, 375-376. 



Homo primigenius, 373-374. 



Homo sapiens, 373-374. 



Horse, evolution of, 319-321. 



Horse-shoe Crabs, 13, 117. 



Horsetown formation, 237, 243. 



Howes, 19. 



Hudson River, 279, 298, 299, 355. 



Hudson Valley, 108, 112, 297, 298, 

 332, 348, 364. 



Human and geologic history com- 

 pared, 32-33. 



Hungary, 227. 



Hunter, 117. 



Hunter, G. W., 11. 



Huronian, 42, 49, 50, 55. 



Hydrozoans, 13, 15, 72-73, 91-92. 



Hypsocormus, 233. 



